Are you really saying that first hand evidence of Zuck’s character is irrelevant to our understanding of him because it relates to a period when he was relative

Are you really saying that first hand evidence of Zuck’s character is irrelevant to our understanding of him because it relates to a period when he was relatively young? We can’t use that together with his more recent actions to create a more complete picture of his character and motivations. That biographies should all start at age 30?